A careful study of thousands of years of Antarctic Gentoo penguin guano, aka “poop,” shows that volcanic eruptions, rather than climate change or rising sea levels, have caused their population to drop in the past.
The History Of These Antarctic Penguins Is Tied In With Volcanic Eruptions
The Ardley Island study team, along with a number of others, are studying Antarctic penguin species to determine the effect of climate change and sea ice levels over time. Gentoo penguins are the only Antarctic penguin species with a level or increasing population.